I currently have the Ety's but the reviews on the Sensaphonic has me thinking of upgrading, BUT I still have not heard the AKG K-1000's yet. If anyone has these two great pieces could you fill me in on the real differences. How is the bottom end on the K-1000 to the Sensaphonice. I realize you have 2 compltely different types here. As a background I have always owned electrostatics with tube amps for over 30 years now of all different types, but even the ETY's I have now produce a great "Personal" sound.